Apparatus for the electrical precipitation of suspended particles from gases



June 8 1926. 1,588,012

c. H. WEISKOPF.

APPARATUS FOR THE ELECTRICAL PRECIPITATION 0F SUSPENDED'P ARTICLES FROM GASES Filed March 27. 1923 z Sheets-Sheet 1 INVENTOR Cha ries if. l/Veisflapf ATTORNEY June 8,1926. 1,588,072

(I. H. WEISKOPF APPARATUS FOR THE ELECTRICAL PRECIPITATION 0F SUSPENDED PARTICLES FROM GASES Filed March 27. 1923 2 Sheets-Sheet 3 IIIVVENTOR Charles fi. n/eiskapf A TTORNE Y Patented June 8, 1926.

UNITED STATES PATENT OFFICE.

CHARLES H. WEISKOPF, OF HAWTHORNE, CALIFORNIA, ASSIGNOR TO INTERNA- TIONAL PRECIPITATION COMPANY, 0] LOS ANGELES, CALIFORNIA, A CORPORA- TION OF CALIFORNIA.

APPARATUS FOR THE ELECTRICAL PRECIPITATION OI SUSPENDED PARTICLES FBO GASES.

Application filed March 27, 1923. Serial 110,628,058.

The invention relates to the precipitation of suspended particles from gases by electrical action, and the main object of the present invention is to providean electrical precipitator with simple and effective means for removing the precipitated material from the electrodes thereof.

This application contains subject matter originally described in my application, Serial No. 501,840, filed September 19, 1921, which has matured into Patent #1,463,352.

The accompanying drawings illustrate embodiments of my invention and referring thereto: 4

Fig. 1 is of an electrical precipitator means for cleaning electrodes dr%pping the same.

a partly sectional side elevation provided with y lifting and g. 2 is a partial elevation of the electrode supports for the electrical precipitator shown in Fig. 1.

Fig. 3 is a side elevation of the construction shown in Fig. 2,.a portion of the precipitator wall being shown in section.

Fig. 4 is a plan view of the operating means shown in Fig. 1, a portion of the precipitator frame being shown in section and a modified form of lifting means being shown.

Fig. 5 is a side elevation of the mechanism shown in Fig. 4.

v Fig. 6 is a side elevation of spacing means for the collecting electrodes.

Fig. 7 is a partial end elevation and Fig.

8 is a partial side elevation of the lower guiding supports for the discharge electrodes.

The. electrical precipitator shown in Fig. 1 comprises one or more flues or chambers 1 adapted to receive and conduct the gas to be treated and having mounted there-- in the electrodes for effecting electrical action on the gases to precipitate suspended material therefrom; said electrodes comprising collecting electrodes 2 and discharge electrodes '3. The collecting electrodes 2 preferably comprise plates, screens, or similar means extending longitudinall in the flue and arallel to the path of t e gases passing tlirough said flue, a plurality of such members being arranged in a row extending across the flue or chamber 1. The

discharge electrodes 3 extend vertically between the successive collecting electrodes.

Each collecting electrode 2 may, as shown in Fig. 1, consist of a. vertical plate hung from top bars 4 and having. a reenforcing bar 5 at its lower edge. The electrodes 2 are preferably loosely mounted to enable vertical vibration or movement thereof, this being effected, for example by providing each electrode with two top bars 4 rigidly secured to opposite sides of the electrode and resting on supporting means 7, hereinafter described, said bars 4 embracing lugs 4 6, on stationary frame beams 10 so that the weight of the electrode rests on said means 7 but the electrode can move freely upward. The lower bars 5 of the electrode pass loosely through notches 8 in a fixed spacing bar 9 (see Fig. 6) to hold the electrodes from lateral displacement while permitting vertical motion thereof.

Each discharge electrode may consist of a vertical frame and discharge electrode elements mounted in said frame, the frame consisting of cross-bars 11 and side bars 12, having lugs 13 resting'loosely in notches 14 on upper and lower supporting beams 15 at each end. of the frame, so as to permit free upward movement and rattling movement of the electrodes. Any suitable discharge electrode elements may be mounted on said frame. I prefer, however, to use bars or rods 16 mounted in the said frame bars 12. The said discharge electrode members 16 may consist of metal rods of any suitable cross-section, but in any case the said dischar e electrode members are spaced sufficiently ar apart to enable each of said electrode members to produce its own individual field without undue interference from the adjacent discharge electrode members.

The discharge electrode supporting beams .in Figs. 7 and' 8).

The sigh tension discharge electrodes are connec to suitable energizing means for supplying the same with rectified current of high potential, such current for example,-being supplied from a suitable alternating current source through a step up transformer and the collecting electrode system being grounded in the usual manner, as indicated at 45 in Fig. 1. Y

I provide forraising the electrodes bodily and dropping them. The collecting electrddes 2 rest by their top bars 4 on cam bars formed, for example, as square bars 7, as shown in Figs. 2 .and 3, which are mounted to turn in bearings 25, so as to intermittently raise the collecting electrodes. Similarly, the discharge electrodes 3 are mounted to rest on cams or square bars 26 mounted to turn in bearings 27.

Instead of the square shafts for lifting and dropping the electrodes, I may use cams, as indicated in Figs. 4 and 5 at 30 and 31. ri idly mounted on shafts 34 and 36 for lii ting the collecting electrodes and the discharge electrodes, respectively, the construction being otherwise as above described in connection with Figs. 1, 2, and 3.

In each of these cases the mounting of the electrodes is such as to permit a free u ward movement thereof so that the full jarring effect of the vertical impact due to the sudden arrest of the downward movement is secured, .the electrodes rebounding slightly on such impact so as to rattle or vibrate on or within their sup rts. The operating shafts 34 for the-liftmg means for the collecting electrodes, are provided with operating gears 35 operated by chains, or other-- Wise, from any suitable motive device. For

the lifting shafts 36 for the dis-'- 0 eratin charge eIectrodes a separate shaft 37 may be rovided, mounted to turn in a suitable fixed caring and movable slightly endwise therein, so as to bring a clutch member 38 thereon into enga ement with a clutch member 39 on the. li ting shaft 36. The several shafts 34 and 37 aforesaid may be operated from an electric motor 40 through belt or chain conn :tions 41, 42, 43 and 44, indicated in broken lines in Figs. 4 and 5.

For control of the operating mechanism for the discharge electrodes, I may provide a rock "shaft 46 manually operated in any suitable manner, for example, by connection to a switch pull-cord 47 for operating switch 29 controlling the current to one section of the electrical precipitator said rock shaft carrying levers 48 to whic are pivoted collars 49 engaging with the respective shafts 37 for said section of the precipitator in such manner that rocking of the shaft46 by opleration of the pull-cord 47 will cause the s afts 37 to move longitudinally so as to bring clutches 38 thereon into clutch with clutch members 39 on the shafts 36, the effect of this operation being to simultaneously open the energizing circuit to the electrical precipitator section and to mechanically connectthe operating shafts 37 to the lifting shafts 36. At the same time the shaft 37 itself may be brought into operative rela tion with a drive ulley indicated at 50 b engagement of a c utch 51 on shaft 37 wit a clutch 52 on said drive pulley. The respective drive pulleys 50 may be operated by belt connections 44 from the shaft 54 of a pulley 42 forming a part of the driving system for the shafts 34 aforesaid.

In each of the forms of the invention above described the collecting electrodes normally rest on stationary supports which ma consist either of liftin bars (square bars as shown in Figs. 2 an 3 or cams as shown in Figs. 4 and 5 or mayconsist of stationary frame bars shown at 9 in 1 and 6, said electrodes resting on the bottom of notches 8 in said bars, or the collecting electrode may have a cross plate 56 at its upper end normally resting on the lug 6 aforesaid to support the electrode and receive the impact of the electrode when the latter .is dropped. The discharge electrodes normally rest either on the operating square bars .or the lifting cams or on any other suitable stationary supports, for example the lugs 13 may normally rest on the bottom of the respective slots 14; In the operation of the jarrmg device, the rotation of the cam shafts causes the electrodes to be raised from their normal position and to be suddenly dropped onto the stationary sup orts therefor, so as to jar the electrodes and dislodge deposited material therefrom.

What I claim is:

1. In an electrical precipitator a plurality of electrodes mounted to move vertically, and independently of one another, each electrode having a frame means normally resting on stationary supporting means and cam means directly enga ing said frame means for intermittently lifting each of said electrodes and allowing it todrop on such stadischarge electrodes mounted to move vet-t gagement of said cam means so as to maintically and independently of one another, each of said discharge electrodes comprising a frame means and discharge electrode elements mounted in said frame means, an insulated support on which said discharge electrodes are normally supported and cam means mounted on said insulated support and adapted to directly engage said frames of each of said discharge electrodes to lift the discharge electrode and to permit it to drop into contact withsaid support to jar the electrode.

4. In an electrical precipitator a construction as set forth in claim 3 and comprising, in addition, operating means for said cam means, comprising clutch means adapted to be disengageably connected with the said cam means to o erate the same for jarring the electrode an to permit of normal disentain the insulation of the discharge electrode. I

5. In an electrical precipitator a construction as set forth in claim 3 and comprising in addition operating means for said cam means comprising clutch-means adapted to be disengagedly connected with the said cam means to operate the same for jarrin the electrode and to permit of normal' isengagement of said cam means so as to maintain the insulation of the discharge electrode, and manual controlling means for operating said'clutch means to bring the cam means into or out of operative connection with said operatin means.

In testimony w ereof I have hereunto subscribed my name this 19th day of March,

CHARLES H. WEISKOPF. 

